Landmark
Sword Lake Octagon House
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The Sword Lake Octagon House, known locally as Tháp Rùa (Turtle Tower), stands on a small grassy islet in the middle of Hoan Kiem Lake in central Hanoi. This iconic structure is a beloved symbol of the city, often featured in photographs and postcards. The octagonal tower rises from a stone base, with its red brick and stucco walls topped by a curved roof and a spire. Visitors can view the tower from the lakeside promenade, which is especially enchanting at dawn or dusk when the tower is illuminated. The surrounding Ngoc Son Temple and the red Huc Bridge add to the area's charm. While you cannot enter the tower itself, the lake's perimeter offers a peaceful walk, with locals practicing tai chi in the mornings. The tower's reflection in the calm water creates a picture-perfect scene that captures the essence of Hanoi.
Don't miss
- View the tower from the lake's edge, especially at sunset
- Walk across the red Huc Bridge to Ngoc Son Temple
- Watch locals practice tai chi along the lakeside in early morning
- Photograph the tower reflected in the water
- Stroll the tree-lined paths around the lake
Tickets & tours
Ways to visit Sword Lake Octagon House
You don't need a tour to visit — entry is free. A tour is worth it if you want transport, a guide, or to combine Sword Lake Octagon House with nearby sights in one day. That's what these do well.
Cheapest way inPrivate Walking Tour of Hanoi City4.9★ · 1,390 travelers3–5 hoursFree cancellationFrom$5 per personSee dates →
Most bookedSmall Group Hanoi Street Food Tour with a Real Foodie5★ · 5,155 travelers~3 hoursFree cancellationFrom$28 per personSee dates →
Private & flexible(Group/Individual) HANOI STREET FOOD TOUR5★ · 527 travelers2–3 hoursFree cancellationFrom$5 per personSee dates →Know before you go
- Visit early to avoid crowds and heat, especially in summer.
- Bring a camera; the tower is most photogenic from the eastern side of the lake.
- Combine your visit with a walk through the Old Quarter's narrow streets.
- Beware of touts offering boat rides; the tower is not accessible by boat.
A bit of history
The Turtle Tower was built in the 19th century on the site of an older structure. It is associated with the legend of Emperor Le Loi returning a magical sword to a golden turtle in the lake, giving the lake its name 'Hoan Kiem' (Lake of the Returned Sword).
Common questions
Can I go inside the Octagon House?
No, the tower is closed to the public. You can view it from the lakeside.
Is there an entrance fee to see the tower?
No, viewing the tower from the lake promenade is free.
What is the best time to visit?
Early morning or late afternoon for pleasant weather and good lighting.
How long does it take to walk around the lake?
About 30-45 minutes at a leisurely pace.
Is the area safe at night?
Yes, the lake area is popular with locals and tourists in the evening, but keep an eye on your belongings.
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